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To: Dave B who wrote (40226)	4/18/2000 10:35:00 AM
From: gnuman	Read Replies (1) \| Respond to of 93625

Dave B, re: <Beyond that I'm not qualified to guess how many support pins would be required.> I think that even if they were able to eliminate the ground traces bracketing the data lines, you still require a ground pin next to every data pin. If I remember my strip line transmission theory, the image is an imaginary current that flows a distance H, (the dielectric thickness), below the ground plane and forms part of the signal path. (Analogous to a two-wire line in which one of the wires is an image in the ground plane). It's important that a ground VIA to the ground plane be next to the signal connection, (preferably below it), to prevent any discontinuities in the signal path. JMHO's